EP0470504A3 - Fixed rf agc of a television tuner for fm reception in a television receiver - Google Patents

Fixed rf agc of a television tuner for fm reception in a television receiver Download PDF

Info

Publication number
EP0470504A3
EP0470504A3 EP19910112936 EP91112936A EP0470504A3 EP 0470504 A3 EP0470504 A3 EP 0470504A3 EP 19910112936 EP19910112936 EP 19910112936 EP 91112936 A EP91112936 A EP 91112936A EP 0470504 A3 EP0470504 A3 EP 0470504A3
Authority
EP
European Patent Office
Prior art keywords
television
agc
reception
fixed
tuner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19910112936
Other versions
EP0470504B1 (en
EP0470504A2 (en
Inventor
William Lester Lehmann
Leroy Samuel Wignot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Publication of EP0470504A2 publication Critical patent/EP0470504A2/en
Publication of EP0470504A3 publication Critical patent/EP0470504A3/en
Application granted granted Critical
Publication of EP0470504B1 publication Critical patent/EP0470504B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Television Receiver Circuits (AREA)
EP91112936A 1990-08-06 1991-08-01 Fixed RF AGC of a television tuner for FM reception in a television receiver Expired - Lifetime EP0470504B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/561,583 US5146338A (en) 1990-08-06 1990-08-06 Fixed rf agc of a television tuner for fm reception in a television receiver
US561583 1990-08-06

Publications (3)

Publication Number Publication Date
EP0470504A2 EP0470504A2 (en) 1992-02-12
EP0470504A3 true EP0470504A3 (en) 1992-09-16
EP0470504B1 EP0470504B1 (en) 1996-10-16

Family

ID=24242572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112936A Expired - Lifetime EP0470504B1 (en) 1990-08-06 1991-08-01 Fixed RF AGC of a television tuner for FM reception in a television receiver

Country Status (7)

Country Link
US (1) US5146338A (en)
EP (1) EP0470504B1 (en)
JP (1) JPH05252467A (en)
KR (1) KR920005620A (en)
CN (1) CN1059246A (en)
DE (1) DE69122696T2 (en)
MY (1) MY106500A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04373279A (en) * 1991-06-21 1992-12-25 Sony Corp Receiver
JPH0799458A (en) * 1993-09-29 1995-04-11 Uniden Corp Satellite broadcast receiver with scpc signal reception function
ITMI951099A1 (en) * 1995-05-26 1996-11-26 Mattia Silvio Della AUDIO SIGNALS RADIO RECEIVER OF TELEVISION BROADCASTS
US6285865B1 (en) 1998-11-12 2001-09-04 Broadcom Corporation System and method for on-chip filter tuning
WO2001060056A2 (en) * 2000-02-08 2001-08-16 Koninklijke Philips Electronics N.V. Automatic gain control
KR20010107263A (en) * 2000-05-26 2001-12-07 송재인 Receiver capable of receiving multi-media and the control method thereof
EP1438841A2 (en) * 2001-10-16 2004-07-21 Rfstream Corporation Monolithic integrated circuit for a television receiver
US7199844B2 (en) * 2002-05-28 2007-04-03 Rfstream Corporation Quadratic nyquist slope filter
WO2003103131A2 (en) * 2002-05-29 2003-12-11 Ukom, Inc. Image rejection quadratic filter
US7333155B2 (en) * 2002-06-05 2008-02-19 Rfstream Corporation Quadratic video demodulation with baseband nyquist filter
US6882245B2 (en) * 2002-06-05 2005-04-19 Rf Stream Corporation Frequency discrete LC filter bank
KR100484172B1 (en) * 2002-11-01 2005-04-19 삼성전자주식회사 Apparatus for receiving television and radio using single tuner
US6940365B2 (en) 2003-07-18 2005-09-06 Rfstream Corporation Methods and apparatus for an improved discrete LC filter
JP2005102105A (en) * 2003-08-28 2005-04-14 Mitsumi Electric Co Ltd Broadcast reception system and broadcast reception method
CN101138160A (en) * 2005-03-11 2008-03-05 Rf信息公司 Wideband tuning circuit
US7358795B2 (en) * 2005-03-11 2008-04-15 Rfstream Corporation MOSFET temperature compensation current source
EP1861925A2 (en) * 2005-03-11 2007-12-05 Corporation Rfstream Radio frequency inductive-capacitive filter circuit topology
US8212940B2 (en) 2006-12-06 2012-07-03 Dave Xiao Dong Yang Hybrid architecture of TV receiving devices
KR102494784B1 (en) 2015-07-28 2023-02-01 삼성전자주식회사 Receiver and operating method thereof
CN108429556B (en) * 2018-02-14 2020-08-04 沃勤科技有限公司 Device and method for self-adaptively counteracting in-band interference received in wireless transceiving system

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987242A (en) * 1974-04-24 1976-10-19 American Optical Corporation Automatic dc restorer and gain control
JPS51117510A (en) * 1975-04-07 1976-10-15 Shintou Denki Kk Double superheterodyne receiver
JPS5823972B2 (en) * 1975-05-30 1983-05-18 三洋電機株式会社 multiband digital synthesizer receiver
JPS52102626A (en) * 1976-02-25 1977-08-29 Hitachi Ltd Tv receiver
US4162451A (en) * 1977-07-05 1979-07-24 Texas Instruments Incorporated MESFET-device surface-wave-device channel selector
US4216427A (en) * 1978-06-14 1980-08-05 Motorola, Inc. Adaptive audio compressor
JPS5934035B2 (en) * 1978-10-19 1984-08-20 ヤマハ株式会社 Receiver multiple modulation wave demodulation circuit
JPS5847100B2 (en) * 1979-01-10 1983-10-20 松下電器産業株式会社 Channel selection device
US4286288A (en) * 1979-05-25 1981-08-25 Teleprompter Corporation Apparatus and method for tamper resistant channel attenuation in subscription television converter
US4352111A (en) * 1981-01-26 1982-09-28 Rca Corporation Multi-band antenna coupling network
JPS58159031A (en) * 1982-03-16 1983-09-21 Matsushita Electric Ind Co Ltd Frequency modulation/television receiver
US4553264A (en) * 1982-09-17 1985-11-12 Matsushita Electric Industrial Co., Ltd. Double superheterodyne tuner
US4575761A (en) * 1983-04-28 1986-03-11 Rca Corporation AFT arrangement for a double conversion tuner
US4499602A (en) * 1983-06-28 1985-02-12 Rca Corporation Double conversion tuner for broadcast and cable television channels
US4581643A (en) * 1983-07-25 1986-04-08 Rca Corporation Double conversion television tuner with frequency response control provisions
US4726072A (en) * 1983-07-28 1988-02-16 Matsushita Electric Industrial Co., Ltd. Double converter tuner
US4574308A (en) * 1984-04-20 1986-03-04 Dell-Star Corporation FM Video receiver
JPS61111032A (en) * 1984-11-05 1986-05-29 Yuniden Kk Reception frequency band discriminating method in receiving device
US4651210A (en) * 1984-12-24 1987-03-17 Rca Corporation Adjustable gamma controller
JPH0614501Y2 (en) * 1985-04-26 1994-04-13 シャープ株式会社 Band-pass filter in converter for CATV
US4745411A (en) * 1986-10-29 1988-05-17 Kaiser Electronics Digital gain adjustment
JPS63242030A (en) * 1987-03-30 1988-10-07 Toshiba Corp Broad band frequency synthesizer receiver
DE3784930T2 (en) * 1987-09-03 1993-09-02 Philips Nv RECEIVER WITH TWO BRANCHES.
DE3784717T2 (en) * 1987-09-03 1993-08-26 Philips Nv PHASE AND GAIN CONTROL FOR A RECEIVER WITH TWO BRANCHES.
GB2214757A (en) * 1988-01-22 1989-09-06 Philips Electronic Associated Signal distribution network
US4996484A (en) * 1988-12-29 1991-02-26 Atlantic Richfield Company Method and apparatus for cancelling powerline noise in geophysical electromagnetic exploration
US4903129A (en) * 1989-04-06 1990-02-20 Thomson Consumer Electronics, Inc. Audio signal section apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 280 (E-216)(1425) 14 December 1983 & JP-A-58 159 031 ( MATSUSHITA ) 21 September 1983 *

Also Published As

Publication number Publication date
JPH05252467A (en) 1993-09-28
DE69122696T2 (en) 1997-03-13
KR920005620A (en) 1992-03-28
MY106500A (en) 1995-06-30
EP0470504B1 (en) 1996-10-16
CN1059246A (en) 1992-03-04
DE69122696D1 (en) 1996-11-21
EP0470504A2 (en) 1992-02-12
US5146338A (en) 1992-09-08

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